Exhaust heat reuse and transferring device

ABSTRACT

An exhaust heat reuse and transferring device includes a first heat-exchange pipe which is connected to an inflation valve and a steam pressure buffering member is connected between the inflation valve and a second heat-exchange pipe. The second heat-exchange pipe is connected to a nozzle. A water tank is connected to the first heat-exchange pipe by a pump and provides the agent for heat exchange with an exhaust pipe. The exhaust air with high temperature exchanges thermo energy with the water to form steam which is ejected from the nozzle. The nozzle is connected with power generation device to generate energy.

FIELD OF THE INVENTION

The present invention relates to an exhaust heat reuse and transferring device, and more particularly, to a device collecting the exhaust heat and transferring the exhaust heat into electric power.

BACKGROUND OF THE INVENTION

A conventional internal combustion engine ignites fuel and burns the fuel which explodes and expands the air to drive the piston and crank to generate power. However, the thermo efficiency of the internal combustion engine is only 20% to 35%, and which means that 65% to 80% of the thermo energy is released to the air. The temperature of the exhaust air of conventional engines is about 600 to 800 degrees Celsius and the thermo energy is wasted and brings environmental problems such as global warming. The Oxygen and Nitrogen are combined to be Nitrogen oxides under the higher temperature and the Nitrogen oxides pollute the air and cause the global warming. Nitrogen oxides are one of the targets that the environmentalists want to restrict. Although some of the Nitrogen oxides are recycled and reused by turbines, the exhaust air with high temperature is still the main concern for scientists and countries highly dependent upon vehicles. How to reuse the thermo energy of the exhaust air is the main issue for every country.

The present invention intends to provide an exhaust heat reuse and transferring device for improving the shortcomings mentioned above.

SUMMARY OF THE INVENTION

The present invention relates to an exhaust heat reuse and transferring device and comprises a first heat-exchange pipe which is connected to an inflation valve and a steam pressure buffering member is connected between the inflation valve and a second heat-exchange pipe. The second heat-exchange pipe is connected to a nozzle. A water tank is connected to the first heat-exchange pipe by a pump.

The water tank provides water for heat exchange with an exhaust pipe. The exhaust air with high temperature exchanges thermo energy with the water to form steam which is ejected from the nozzle. The nozzle is connected with power generation device such as a turbine to form a generator so as to generate energy.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the exhaust heat reuse and transferring device of the present invention, and

FIG. 2 shows that the exhaust heat reuse and transferring device of the present invention is in operation.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIG. 1, the exhaust heat reuse and transferring device of the present invention comprises a first heat-exchange pipe 11, and an inflation valve 14 (or a capillary) is connected to the first heat-exchange pipe 11. A steam pressure buffering member 12 is connected between the inflation valve 14 and a second heat-exchange pipe 13, and the second heat-exchange pipe 13 is connected to a nozzle 30.

A water tank 20 is provided to receive water therein and a level detection member is installed in the water tank 20 to detect the water level so as to provide water to an exhaust pipe 10. The water tank 20 is connected to the first heat-exchange pipe 11 by a pump 21.

The first heat-exchange pipe 11, the steam pressure buffering member 12, the second heat-exchange pipe 13 and the inflation valve 14 (or a capillary) are located in the exhaust pipe 10. The exhaust pipe 10 has one end connected to the outlet of heat source.

As shown in FIG. 2, the first heat-exchange pipe 11 has one end connected to the water tank 20 and the pump 21 pumps the water into the first heat-exchange pipe 11 by a proper pressure. In this embodiment, the pressure is 50 kg/cm² (48.39 atm). The exhaust pipe 10 has one end connected to the outlet of heat source such as an internal combustion engine whose exhaust air has about 600 to 800 degrees Celsius. The exhaust air enters into the exhaust pipe 10 and proceeds heat-exchange processes with the second heat-exchange pipe 13, the first heat-exchange pipe 11 and the steam pressure buffering member 12 to reduce the temperature of the exhaust air to be about 50 degrees Celsius.

When the water flows to the end of first heat-exchange pipe 11, the water temperature is about 150 degrees Celsius and the pressure is 50 kg/cm² (48.39 atm) and not yet becoming steam. The inflation valve 14 (or a capillary) is connected between the first heat-exchange pipe 11 and the steam pressure buffering member 12. The water and steam reduce their pressure when passing through the inflation valve 14 (or a capillary). The temperature of the evaporation temperature of the water is also reduced. The water and steam at high speed is ejected into the steam pressure buffering member 12 to change their phases and become steam of high pressure and high temperature. The steam of high pressure and high temperature then enters into the second heat-exchange pipe 13 to proceed the heat exchange to become the supersaturated steam with the temperature about 200 degrees Celsius. The supersaturated steam with high pressure and temperature passes through the second heat-exchange pipe 13 and ejects from the nozzle 30 at high speed.

The present invention exchanges the thermo energy from the exhaust air to the water which then becomes steam of high pressure and high temperature and ejects from the nozzle 30. The nozzle 30 is connected with a turbine (for example) to become a power generator to generate electric power.

The present invention reuses the exhaust air from the internal combustion engine and exchanges the high pressure and high temperature of the exhaust, air with the water to form supersaturated steam which ejects from the nozzle 30. The nozzle 30 is connected with a power generator to generate electric power. The final temperature of the exhaust air is reduced to be 50 degrees Celsius which has less impact to the environment and air.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention. 

1. An exhaust heat reuse and transferring device comprising: a first heat-exchange pipe and an inflation valve connected to the first heat-exchange pipe, a steam pressure buffering member connected between the inflation valve and a second heat-exchange pipe, the second heat-exchange pipe connected to a nozzle.
 2. The device as claimed in claim 1, further comprising a water tank connected to the first heat-exchange pipe by a pump.
 3. The device as claimed in claim 1, wherein the first heat-exchange pipe, the steam pressure buffering member, the second heat-exchange pipe and the inflation valve are located in an exhaust pipe. 